The impact of the near-surface region on the interpretation of x-ray absorption spectroscopy
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arXiv
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| Format: | Preprint |
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2023
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| author | Shoham, Lishai Baskin, Maria Kauffmann, Yaron Zakharova, Anna Yoshida, Teppei Miyasaka, Shigeki Piamonteze, Cinthia Kornblum, Lior |
| author_facet | Shoham, Lishai Baskin, Maria Kauffmann, Yaron Zakharova, Anna Yoshida, Teppei Miyasaka, Shigeki Piamonteze, Cinthia Kornblum, Lior |
| contents | Transition metal oxides (TMOs) exhibit a broad spectrum of electronic, magnetic, and optical properties, making them intriguing materials for various technological applications. Soft x-ray absorption spectroscopy (XAS) is widely used to study TMOs, shedding light on their chemical state, electronic structure, orbital polarization, element-specific magnetism, and more. Different XAS acquisition modes feature different information depth regimes in the sample. Here, we employ two XAS acquisition modes, having surface-sensitive versus bulk probing depths, on the prototypical TMO SrVO3. We illustrate and elucidate a strong apparent discrepancy between the different modes, emphasizing the impact of the near-surface region on the interpretation of XAS data. These findings highlight the importance of the acquisition mode selection in XAS analysis. Moreover, the results highlight the role of the near-surface region not only in the characterization of TMOs, but also in the design of future nanoscale oxide electronics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_06724 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The impact of the near-surface region on the interpretation of x-ray absorption spectroscopy Shoham, Lishai Baskin, Maria Kauffmann, Yaron Zakharova, Anna Yoshida, Teppei Miyasaka, Shigeki Piamonteze, Cinthia Kornblum, Lior Materials Science Transition metal oxides (TMOs) exhibit a broad spectrum of electronic, magnetic, and optical properties, making them intriguing materials for various technological applications. Soft x-ray absorption spectroscopy (XAS) is widely used to study TMOs, shedding light on their chemical state, electronic structure, orbital polarization, element-specific magnetism, and more. Different XAS acquisition modes feature different information depth regimes in the sample. Here, we employ two XAS acquisition modes, having surface-sensitive versus bulk probing depths, on the prototypical TMO SrVO3. We illustrate and elucidate a strong apparent discrepancy between the different modes, emphasizing the impact of the near-surface region on the interpretation of XAS data. These findings highlight the importance of the acquisition mode selection in XAS analysis. Moreover, the results highlight the role of the near-surface region not only in the characterization of TMOs, but also in the design of future nanoscale oxide electronics. |
| title | The impact of the near-surface region on the interpretation of x-ray absorption spectroscopy |
| topic | Materials Science |
| url | https://arxiv.org/abs/2308.06724 |